diff --git a/vizro-core/tests/unit/vizro/models/_navigation/test_accordion.py b/vizro-core/tests/unit/vizro/models/_navigation/test_accordion.py
index cd9af9f80..d929e6c8a 100644
--- a/vizro-core/tests/unit/vizro/models/_navigation/test_accordion.py
+++ b/vizro-core/tests/unit/vizro/models/_navigation/test_accordion.py
@@ -113,9 +113,7 @@ class TestAccordionBuild:
     @pytest.mark.parametrize("pages, expected", test_cases)
     def test_accordion(self, pages, expected):
         accordion = vm.Accordion(id="accordion", pages=pages).build(active_page_id="Page 1")
-        assert_component_equal(
-            accordion, html.Div(id="nav-panel"), keys_to_strip={"children"}
-        )
+        assert_component_equal(accordion, html.Div(id="nav-panel"), keys_to_strip={"children"})
         assert_component_equal(accordion["accordion"], expected, keys_to_strip={"class_name", "className"})
 
     def test_accordion_one_page(self):
diff --git a/vizro-core/tests/unit/vizro/models/_navigation/test_nav_bar.py b/vizro-core/tests/unit/vizro/models/_navigation/test_nav_bar.py
index da497c1a1..3a857ed64 100644
--- a/vizro-core/tests/unit/vizro/models/_navigation/test_nav_bar.py
+++ b/vizro-core/tests/unit/vizro/models/_navigation/test_nav_bar.py
@@ -94,11 +94,7 @@ def test_nav_bar_active_pages_as_dict(self, pages_as_dict):
             ]
         )
         assert_component_equal(built_nav_bar["nav-bar"], expected_button, keys_to_strip={"id", "className"})
-        assert_component_equal(
-            built_nav_bar["nav-panel"],
-            html.Div(id="nav-panel", className="nav_panel"),
-            keys_to_strip={"children"},
-        )
+        assert_component_equal(built_nav_bar["nav-panel"], html.Div(id="nav-panel"), keys_to_strip={"children"})
         assert_component_equal(built_nav_bar["nav-panel"].children, [dbc.Accordion()], keys_to_strip=STRIP_ALL)
 
     def test_nav_bar_active_pages_as_list(self, pages_as_list):
@@ -120,10 +116,7 @@ def test_nav_bar_active_pages_as_list(self, pages_as_list):
             ]
         )
         assert_component_equal(built_nav_bar["nav-bar"], expected_buttons, keys_to_strip={"id", "className"})
-        assert_component_equal(
-            built_nav_bar["nav-panel"],
-            html.Div(id="nav-panel", hidden=True),
-        )
+        assert_component_equal(built_nav_bar["nav-panel"], html.Div(id="nav-panel", hidden=True))
 
     def test_nav_bar_not_active_pages_as_dict(self, pages_as_dict):
         nav_bar = vm.NavBar(pages=pages_as_dict)
@@ -160,7 +153,4 @@ def test_nav_bar_not_active_pages_as_list(self, pages_as_list):
             ]
         )
         assert_component_equal(built_nav_bar["nav-bar"], expected_buttons, keys_to_strip={"id", "className"})
-        assert_component_equal(
-            built_nav_bar["nav-panel"],
-            html.Div(id="nav-panel", hidden=True),
-        )
+        assert_component_equal(built_nav_bar["nav-panel"], html.Div(id="nav-panel", hidden=True))
diff --git a/vizro-core/tests/unit/vizro/models/_navigation/test_navigation.py b/vizro-core/tests/unit/vizro/models/_navigation/test_navigation.py
index 970397950..be0bf3efb 100644
--- a/vizro-core/tests/unit/vizro/models/_navigation/test_navigation.py
+++ b/vizro-core/tests/unit/vizro/models/_navigation/test_navigation.py
@@ -85,38 +85,22 @@ def test_default_nav_selector(self, pages, request):
         navigation.pre_build()
         built_navigation = navigation.build(active_page_id="Page 1")
         assert_component_equal(built_navigation["nav-bar"], html.Div(hidden=True, id="nav-bar"))
-        assert_component_equal(
-            built_navigation["nav-panel"],
-            html.Div(id="nav-panel"),
-            keys_to_strip={"children"},
-        )
+        assert_component_equal(built_navigation["nav-panel"], html.Div(id="nav-panel"), keys_to_strip={"children"})
         assert_component_equal(built_navigation["nav-panel"].children, [dbc.Accordion()], keys_to_strip=STRIP_ALL)
 
     def test_non_default_nav_selector_pags_as_dict(self, pages_as_dict, built_nav_link=None):
         navigation = vm.Navigation(pages=pages_as_dict, nav_selector=vm.NavBar())
         navigation.pre_build()
         built_navigation = navigation.build(active_page_id="Page 1")
-        assert_component_equal(
-            built_navigation["nav-bar"],
-            html.Div(id="nav-bar"),
-            keys_to_strip={"children"},
-        )
-        assert_component_equal(
-            built_navigation["nav-panel"],
-            html.Div(id="nav-panel"),
-            keys_to_strip={"children"},
-        )
+        assert_component_equal(built_navigation["nav-bar"], html.Div(id="nav-bar"), keys_to_strip={"children"})
+        assert_component_equal(built_navigation["nav-panel"], html.Div(id="nav-panel"), keys_to_strip={"children"})
         assert_component_equal(built_navigation["nav-panel"].children, [dbc.Accordion()], keys_to_strip=STRIP_ALL)
 
     def test_non_default_nav_selector_pages_as_list(self, pages_as_list):
         navigation = vm.Navigation(pages=pages_as_list, nav_selector=vm.NavBar())
         navigation.pre_build()
         built_navigation = navigation.build(active_page_id="Page 1")
-        assert_component_equal(
-            built_navigation["nav-bar"],
-            html.Div(id="nav-bar"),
-            keys_to_strip={"children"},
-        )
+        assert_component_equal(built_navigation["nav-bar"], html.Div(id="nav-bar"), keys_to_strip={"children"})
         assert_component_equal(
             built_navigation["nav-panel"], html.Div(id="nav-panel", hidden=True), keys_to_strip={"children"}
         )